Inventor · disambiguated record
Seisaku Kumai
Also filed as: KUMAI SEISAKU · YAMABE MASAAKI
41 granted patents·432 citations·filing 1975–2002
98Inventor score
Top patents by PatentIndex Score
41 records- 0192US4275226AProcess for producing fluorovinyl etherASAHI GLASS CO LTD·Filed 1979·Granted Jun 23, 1981·25 cites·15 claims
- 0290US6197989B1Fluorinated organosilicon compounds and process for the preparation thereofASAHI GLASS CO LTD·Filed 1997·Granted Mar 6, 2001·73 cites·10 claims
- 0389US4340750AProcess for producing fluorovinyl etherASAHI GLASS CO LTD·Filed 1980·Granted Jul 20, 1982·24 cites·12 claims
- 0483US5710317APreparation of difluoroacetic acid fluoride and difluoroacetic acid estersASAHI GLASS CO LTD·Filed 1995·Granted Jan 20, 1998·24 cites·18 claims
- 0582US5568239AStainproofing oil for a heat fixing rollerASAHI GLASS CO LTD·Filed 1995·Granted Oct 22, 1996·46 cites·8 claims
- 0672US5646222APolyfluorohydrocarbon group-containing monomers, their polymers and applications of the polymersASAHI GLASS CO LTD·Filed 1996·Granted Jul 8, 1997·26 cites·14 claims
- 0772US4985588ANucleus-fluorinated aromatic carboxylates and processes for their productionASAHI GLASS CO LTD·Filed 1989·Granted Jan 15, 1991·11 cites·18 claims
- 0871US5648568AMethod for producing a hydrofluorocarbonASAHI GLASS CO LTD·Filed 1995·Granted Jul 15, 1997·12 cites·18 claims
- 0971US5068449AFluorinated benzoyl compoundsASAHI GLASS CO LTD·Filed 1990·Granted Nov 26, 1991·9 cites·9 claims
- 1070US5834612AFluorine-containing organic compoundASAHI GLASS CO LTD·Filed 1997·Granted Nov 10, 1998·12 cites·11 claims
- 1169US4151200AProcess for producing polyfluorodiacyl fluorideASAHI GLASS CO LTD·Filed 1977·Granted Apr 24, 1979·7 cites·8 claims
- 1266US5565607APolyfluorohydrocarbon group-containing monomers, their polymers and application of the polymersASAHI GLASS CO LTD·Filed 1995·Granted Oct 15, 1996·19 cites·7 claims
- 1363US5041647AProcess for producing trifluoroacetic acid and trifluoroacetyl chlorideASAHI GLASS CO LTD·Filed 1986·Granted Aug 20, 1991·8 cites·1 claims
- 1461US5663399AMethod for producing fluorine-containing silicone compoundASAHI GLASS CO LTD·Filed 1995·Granted Sep 2, 1997·13 cites·18 claims
- 1561US5241111AProcesses for producing 5-fluorobenzoic acids and their intermediatesASAHI GLASS CO LTD·Filed 1990·Granted Aug 31, 1993·7 cites·2 claims
- 1660US4379768AProcess for producing perfluorosuccinyl fluorideASAHI GLASS CO LTD·Filed 1981·Granted Apr 12, 1983·5 cites·4 claims
- 1759US5072062ABromination methodASAHI GLASS CO LTD·Filed 1991·Granted Dec 10, 1991·6 cites·10 claims
- 1858US5523476AProcesses for producing tetrafluorophthalic anhydride and fluorobenzoic acidsASAHI GLASS CO LTD·Filed 1995·Granted Jun 4, 1996·5 cites·8 claims
- 1957US5648504AProcess for producing tetrafluorophthalic anhydrideASAHI GLASS CO LTD·Filed 1996·Granted Jul 15, 1997·5 cites·20 claims
- 2056US5332851AProcesses for producing 5-fluorobenzoic acids and their intermediatesASAHI GLASS CO LTD·Filed 1993·Granted Jul 26, 1994·5 cites·4 claims
- 2153US3998877AProcess for preparing methacrylic acidASAHI GLASS CO LTD·Filed 1975·Granted Dec 21, 1976·8 cites·7 claims
- 2252US5908950APolyether modified fluoroalkylsiloxanesWITCO CORP·Filed 1997·Granted Jun 1, 1999·11 cites·20 claims
- 2352US5834614AMethod for producing a fluorine-containing silicone compoundASAHI GLASS CO LTD·Filed 1997·Granted Nov 10, 1998·11 cites·18 claims
- 2451US5557017AMethod for producing a hydrofluorocarbonASAHI GLASS CO LTD·Filed 1994·Granted Sep 17, 1996·3 cites·14 claims
- 2550US5349098AProcess for producing chlorofluorobenzenesASAHI GLASS CO LTD·Filed 1992·Granted Sep 20, 1994·3 cites·3 claims
- 2648US6515102B2Process for recovering fluoropolymersASAHI GLASS CO LTD·Filed 2002·Granted Feb 4, 2003·3 cites·19 claims
- 2745US5929292ADistillation column type production methodASAHI GLASS CO LTD·Filed 1997·Granted Jul 27, 1999·14 cites·16 claims
- 2845US5728903AMethod for producing flourine-containing silicone compoundASAHI GLASS CO LTD·Filed 1997·Granted Mar 17, 1998·6 cites·20 claims
- 2945US4318867AProcess for producing difluoroiodoacetyl fluorideASAHI GLASS CO LTD·Filed 1980·Granted Mar 9, 1982·2 cites·9 claims
- 3044US5618986AMethod for producing a hydrofluorocarbonASAHI GLASS CO LTD·Filed 1996·Granted Apr 8, 1997·2 cites·9 claims
- 3143US5763709AMethod for producing a hydrofluorocarbonASAHI GLASS CO LTD·Filed 1996·Granted Jun 9, 1998·2 cites·15 claims
- 3242US5093515AFluorinated benzoyl compoundsASAHI GLASS CO LTD·Filed 1990·Granted Mar 3, 1992·2 cites·5 claims
- 3342US4089869AProcess for producing perfluorolactoneASAHI GLASS CO LTD·Filed 1976·Granted May 16, 1978·1 cites·9 claims
- 3439US5914422AMethod for producing fluorine-containing silicone compoundASAHI GLASS CO LTD·Filed 1997·Granted Jun 22, 1999·4 cites·24 claims
- 3538US4440948AProcess for preparing methacrylic acidASAHI GLASS CO LTD·Filed 1976·Granted Apr 3, 1984·3 cites·12 claims
- 3637US7015263B2Process for recovering fluoropolymersASAHI GLASS CO LTD·Filed 2002·Granted Mar 21, 2006·0 cites·18 claims
- 3734US6283360B1Composition for preventing creeping of a flux for solderingSEIMI CHEM KK·Filed 1998·Granted Sep 4, 2001·8 cites·9 claims
- 3834US5621147ATrifluoro-2-(trans-4-substituted cyclohexyl) ethylenes and process for their productionASAHI GLASS CO LTD·Filed 1995·Granted Apr 15, 1997·5 cites·10 claims
- 3934US4994610AProcess for preparing fluorinated benzoyl compoundsASAHI GLASS CO LTD·Filed 1989·Granted Feb 19, 1991·0 cites·21 claims
- 4033US5208394AProcess for producing chlorofluorobenzenesASAHI GLASS CO LTD·Filed 1992·Granted May 4, 1993·0 cites·2 claims
- 4132US5861524AOligomeric fluoroalkylsiloxanes as oil spreading agentsOSI SPECIALTIES INC·Filed 1997·Granted Jan 19, 1999·2 cites·29 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →